I have never perceived the 70-200 lens as telephoto zooms, my usage has always been portrait for which the focal length spread is ideal (more useful than 85mm or 135mm primes). While it was convent in the EF system to be able to add a 1.4x or 2x extender in a pinch, this was never the prime reason to own a zoom with such a (relatively) short almost 3x factor, when you have competent 70-300 (4x +) or 100-400 (4x) zooms for serious telephoto work. In my EF past, I owned a 70-200 L for portrait work and a 100-400 L for travel / telephoto missions.Crippled again by lack of TC support. Annoying as hell. Really hating Canon's RF lens strategy. The old 70-200 f/2.8L IS II made a great 98-280 f/4L IS and was main reason I sold my 300 f/4L IS. If I wanted little lenses I'd buy m4/3.
So far only the 24-70 f/2.8L IS appeals but not enough to get me to sell my EF version for 30% more cost.